Responses of intended and unintended receivers to a novel sexual signal suggest clandestine communication
| Autor: | James H. Gallagher, Aaron W. Wikle, Robin M. Tinghitella, David M. Zonana, E. Dale Broder |
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| Rok vydání: | 2021 |
| Předmět: |
Male
0106 biological sciences 0301 basic medicine animal structures Behavioural ecology Science General Physics and Astronomy Evolutionary ecology 010603 evolutionary biology 01 natural sciences Hawaii Article General Biochemistry Genetics and Molecular Biology Gryllidae 03 medical and health sciences Animals Wings Animal Community ecology Selection Genetic reproductive and urinary physiology Coevolution Communication Multidisciplinary Natural selection biology business.industry Diptera fungi Novelty Eavesdropping General Chemistry Mating Preference Animal biology.organism_classification Attraction Preference Field cricket 030104 developmental biology Sexual selection behavior and behavior mechanisms Female Genetic Fitness Vocalization Animal business psychological phenomena and processes |
| Zdroj: | Nature Communications, Vol 12, Iss 1, Pp 1-10 (2021) Nature Communications |
| ISSN: | 2041-1723 |
| DOI: | 10.1038/s41467-021-20971-5 |
| Popis: | Inadvertent cues can be refined into signals through coevolution between signalers and receivers, yet the earliest steps in this process remain elusive. In Hawaiian populations of the Pacific field cricket, a new morph producing a novel and incredibly variable song (purring) has spread across islands. Here we characterize the current sexual and natural selection landscape acting on the novel signal by (1) determining fitness advantages of purring through attraction to mates and protection from a prominent deadly natural enemy, and (2) testing alternative hypotheses about the strength and form of selection acting on the novel signal. In field studies, female crickets respond positively to purrs, but eavesdropping parasitoid flies do not, suggesting purring may allow private communication among crickets. Contrary to the sensory bias and preference for novelty hypotheses, preference functions (selective pressure) are nearly flat, driven by extreme inter-individual variation in function shape. Our study offers a rare empirical test of the roles of natural and sexual selection in the earliest stages of signal evolution. Parasitoid flies eavesdrop on the mating songs of male Hawaiian crickets, creating conflict between sexual and natural selection. Here, the authors investigate the selection acting on a recently evolved male mating signal, a “purring” song, which appears to be undetected by parasitoids. |
| Databáze: | OpenAIRE |
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